Stephen Bearded Minky Hill Posted May 25, 2016 Share Posted May 25, 2016 I may have stumbled across a thread on passion ford about rough running cvh efi's. As it turns out if you are using ngk plugs the electrode is slightly too short. I have now fitted a set of Bosch FR6DCX plugs and I cannot believe the difference. I'm running efi turbo by the way and set the gap to 1mm. Quote Link to comment Share on other sites More sharing options...
Guest username Posted May 25, 2016 Share Posted May 25, 2016 Hmmm, hinteresting.... Will have a gander at ours later, can't think what make they are but I've always hated NGK in my bikes as they seem to foul so much easier than other makes, even cheapies... Also something I've noted when only NGK has been available, the resistor type are even worse than non resistor so where possible I "upgrade" the code from, for example, DR8 ESL to D8 ESL hence getting rid of the resistor part. Be good to hear from others about what plugs they use and how their car runs... Quote Link to comment Share on other sites More sharing options...
Guest username Posted July 5, 2016 Share Posted July 5, 2016 Bumping this post so I can find it easier when we come to the idling problem after the roof is done... Quote Link to comment Share on other sites More sharing options...
jinks Posted July 6, 2016 Share Posted July 6, 2016 cheers stu i fitted some what a driferance it made and with the supper chip runs lovely cheers mate Quote Link to comment Share on other sites More sharing options...
Guest username Posted July 7, 2016 Share Posted July 7, 2016 Well our set of FR6DCX arrived today, will fit 'em and report back when the tension cable "situation" allows me to finish the new roof As an aside, those who have them already, where were yours made? It's stamped onto the side of the plug just above the sealing washer. I was expecting them to be German but they were made in Russia... Quote Link to comment Share on other sites More sharing options...
Stephen Bearded Minky Hill Posted July 7, 2016 Author Share Posted July 7, 2016 Yeh the ones I got were Russian. Quote Link to comment Share on other sites More sharing options...
Guest username Posted July 7, 2016 Share Posted July 7, 2016 ok cool thanks, just seemed weird. Can't wait to see if they make a difference now Quote Link to comment Share on other sites More sharing options...
Ian71 Posted July 7, 2016 Share Posted July 7, 2016 Got a set coming monday,and a free bottle of vodka thrown in LOL Quote Link to comment Share on other sites More sharing options...
Guest username Posted July 9, 2016 Share Posted July 9, 2016 Well out came the old plugs, Bosch super FR7DC no less but they are well and truly worn out although strangely the gaps were a bit small IMO at 0.85mm, and they're utterly black. Also they were none too tight, the sealing washers aren't even crushed. Here's hoping the new DCX's have a noticeable effect. I can't see it not improving to be fair, from the state of these I think a set of NGK's would have even helped! Quote Link to comment Share on other sites More sharing options...
Guest slypanther Posted July 9, 2016 Share Posted July 9, 2016 Hello. Has anyone else tried .. The bosh plugs? Pls my efi runs like a pig. Quote Link to comment Share on other sites More sharing options...
Ian71 Posted July 9, 2016 Share Posted July 9, 2016 Let you know in the week when i get mine. Quote Link to comment Share on other sites More sharing options...
Paul Grainger Posted July 10, 2016 Share Posted July 10, 2016 Ford's of this era never did like NGK plugs for some reason. The genuine ones always worked well but Bosch were ok too. Imo Quote Link to comment Share on other sites More sharing options...
Stephen Bearded Minky Hill Posted July 10, 2016 Author Share Posted July 10, 2016 Hello. Has anyone else tried .. The bosh plugs? Pls my efi runs like a pig. Yes I have these plugs in my efi turbo and it's made a big difference. Quote Link to comment Share on other sites More sharing options...
Guest username Posted July 10, 2016 Share Posted July 10, 2016 We've got them in now and starting is much improved from what it was, idle does seem smoother also but haven't driven it yet due to our ongoing roof replacement. However we do have other issues with fuelling which I've fiddled with at the same time so any improvement is not guaranteed to be from the plugs (bearing in mind ours were, admittedly eons old, Bosch to start with) Quote Link to comment Share on other sites More sharing options...
Himanshu Posted August 23, 2016 Share Posted August 23, 2016 Strange mine runs best on NGK plugs. Tried all sorts, from Bosch, Motorcraft and Spitfire, and Champion, NGK were the damn tickety! Even looking at the colour the NGK are well suited and never missed a beat. Quote Link to comment Share on other sites More sharing options...
Himanshu Posted April 10, 2019 Share Posted April 10, 2019 There is an NGK iridium upgrade. I think it is 7exi. Quote Link to comment Share on other sites More sharing options...
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